The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR16 luminous red galaxy and emission line galaxy samples: cosmic distance and structure growth measurements using multiple tracers in configuration space

Abstract

We perform a multi-tracer analysis using the complete Sloan Digital Sky Survey IV (SDSS-IV) extended Baryon Oscillation Spectroscopic Survey (eBOSS) DR16 luminous red galaxy (LRG) and the DR16 emission line galaxy (ELG) samples in the configuration space, and successfully detect a cross correlation between the two samples, and find the growth rate to be $f{\sigma }_8=0.342\pm 0.085$ ($\sim 25$ per cent accuracy) from the cross sample alone. We perform a joint measurement of the baryonic acoustic oscillation (BAO) and redshift space distortion (RSD) parameters at a single effective redshift of $z_{\mathrm{eff}}=0.77$, using the auto- and cross-correlation functions of the LRG and ELG samples, and find that the comoving angular diameter distance $D_M(z_{\mathrm{eff}})/r_d=18.85\pm 0.38$, the Hubble distance $D_H(z_{\mathrm{eff}})/r_d=19.64\pm 0.57$, and $f{\sigma }_8(z_{\mathrm{eff}})=0.432\pm 0.038$, which is consistent with a $\Lambda$CDM model at $68\%$ CL. Compared to the single-tracer analysis on the LRG sample, the Figure of Merit (FoM) of ${\alpha }_{\perp },{\alpha }_{||}$ and $f{\sigma }_8$ is improved by a factor of $1.11$ in our multi-tracer analysis, and in particular, the statistical uncertainty of $f{\sigma }_8$ is reduced by $11.6\%$.

15 pages, 13 figures, 2 tables; MNRAS accepted; The BAO and RSD measurements and the covariance matrix are made available at https://github.com/ytcosmo/MultiTracerBAORSD/

References in corpus (9)

• The 2.5 m Telescope of the Sloan Digital Sky Survey
• The Clustering of the SDSS DR7 Main Galaxy Sample I: A 4 per cent Distance Measure at z=0.15
• Measuring primordial non-gaussianity without cosmic variance
• Testing cosmological structure formation using redshift-space distortions
• Large-Scale Anisotropic Correlation Function of SDSS Luminous Red Galaxies
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: tomographic BAO analysis of DR12 combined sample in Fourier space
• A measurement of the Hubble constant using galaxy redshift surveys
• Estimating Covariance Matrices for Two- and Three-Point Correlation Function Moments in Arbitrary Survey Geometries
• Mitigating the Impact of the DESI Fiber Assignment on Galaxy Clustering

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